The invention relates to a method for preparing black 
pepper oil resin, which comprises a flaking and crushing 
machine, a supercritical extraction kettle, a separation kettle, a molecular 
distillation device and a black 
pepper oil resin blending device, wherein the flaking and crushing 
machine is used for crushing flaked black pepper with 
water content being below 13 percent, and the crushed flaked black pepper enters the supercritical extraction kettle; the supercritical extraction kettle is used for extracting the black pepper 
powder, the extraction 
solvent is 
carbon dioxide of good grade, the total time of the extraction is 3-4h; the separation kettle is used for separating fluid with extract to obtain a crude extract, wherein the fluid with the extract enters the separation kettle; the molecular 
distillation device is used for separating and removing impurities of water and the like from the crude extract and separating into light components and heavy components, the light components are mainly black 
pepper oil and account for more than 70 percent, the heavy components are mainly 
piperine and account for more than 50 percent; and the black pepper oil resin blending device comprises an edible 
plant oil metering valve, a black pepper 
essential oil metering valve and a 
piperine metering valve, and the black pepper oil resins with different specifications are blended from the black pepper 
essential oil, the 
piperine and the edible 
plant oil according to a certain proportion. The device has the advantages of simple structure and high efficiency and can be used for preparing sensoner with top-grade catering industry.